#example7_18.py
#coding=utf-8
import numpy as np
import pandas as pd
import matplotlib.pyplot as plt
from pandas.plotting import scatter_matrix

np.random.seed(10)
data=np.random.randn(50,3)
df = pd.DataFrame(data, columns=['a', 'b', 'c'])

scatter_matrix(df,marker="*", color="green", 
            figsize=(6, 6) ,s=60)    #s=60表示marker的大小
plt.show()
